Add regression tests for ALTER MATERIALIZED VIEW with tablespaces

The clauses SET TABLESPACE and ALL IN TABLESPACE are supported in ALTER
MATERIALIZED VIEW for a long time, and they behave mostly like ALTER
TABLE by reusing the same code paths, but there were zero tests for
them.  This commit closes the gap with new tests in tablespace.sql.

Author: Yugo Nagata
Discussion: https://postgr.es/m/20220316133337.5dc9740abfa24c25ec9f67f5@sraoss.co.jp

Author: michaelpq

src/test/regress/expected/tablespace.out

@@ -905,6 +905,16 @@ SELECT COUNT(*) FROM testschema.atable;		-- checks heap
      3
 (1 row)
 
+-- let's try moving a materialized view from one place to another
+CREATE MATERIALIZED VIEW testschema.amv AS SELECT * FROM testschema.atable;
+ALTER MATERIALIZED VIEW testschema.amv SET TABLESPACE regress_tblspace;
+REFRESH MATERIALIZED VIEW testschema.amv;
+SELECT COUNT(*) FROM testschema.amv;
+ count 
+-------
+     3
+(1 row)
+
 -- Will fail with bad path
 CREATE TABLESPACE regress_badspace LOCATION '/no/such/location';
 ERROR:  directory "/no/such/location" does not exist
@@ -939,18 +949,22 @@ RESET ROLE;
 ALTER TABLESPACE regress_tblspace RENAME TO regress_tblspace_renamed;
 ALTER TABLE ALL IN TABLESPACE regress_tblspace_renamed SET TABLESPACE pg_default;
 ALTER INDEX ALL IN TABLESPACE regress_tblspace_renamed SET TABLESPACE pg_default;
+ALTER MATERIALIZED VIEW ALL IN TABLESPACE regress_tblspace_renamed SET TABLESPACE pg_default;
 -- Should show notice that nothing was done
 ALTER TABLE ALL IN TABLESPACE regress_tblspace_renamed SET TABLESPACE pg_default;
 NOTICE:  no matching relations in tablespace "regress_tblspace_renamed" found
+ALTER MATERIALIZED VIEW ALL IN TABLESPACE regress_tblspace_renamed SET TABLESPACE pg_default;
+NOTICE:  no matching relations in tablespace "regress_tblspace_renamed" found
 -- Should succeed
 DROP TABLESPACE regress_tblspace_renamed;
 DROP SCHEMA testschema CASCADE;
-NOTICE:  drop cascades to 6 other objects
+NOTICE:  drop cascades to 7 other objects
 DETAIL:  drop cascades to table testschema.foo
 drop cascades to table testschema.asselect
 drop cascades to table testschema.asexecute
 drop cascades to table testschema.part
 drop cascades to table testschema.atable
+drop cascades to materialized view testschema.amv
 drop cascades to table testschema.tablespace_acl
 DROP ROLE regress_tablespace_user1;
 DROP ROLE regress_tablespace_user2;

src/test/regress/sql/tablespace.sql

@@ -380,6 +380,12 @@ INSERT INTO testschema.atable VALUES(3);	-- ok
 INSERT INTO testschema.atable VALUES(1);	-- fail (checks index)
 SELECT COUNT(*) FROM testschema.atable;		-- checks heap
 
+-- let's try moving a materialized view from one place to another
+CREATE MATERIALIZED VIEW testschema.amv AS SELECT * FROM testschema.atable;
+ALTER MATERIALIZED VIEW testschema.amv SET TABLESPACE regress_tblspace;
+REFRESH MATERIALIZED VIEW testschema.amv;
+SELECT COUNT(*) FROM testschema.amv;
+
 -- Will fail with bad path
 CREATE TABLESPACE regress_badspace LOCATION '/no/such/location';
 
@@ -414,9 +420,11 @@ ALTER TABLESPACE regress_tblspace RENAME TO regress_tblspace_renamed;
 
 ALTER TABLE ALL IN TABLESPACE regress_tblspace_renamed SET TABLESPACE pg_default;
 ALTER INDEX ALL IN TABLESPACE regress_tblspace_renamed SET TABLESPACE pg_default;
+ALTER MATERIALIZED VIEW ALL IN TABLESPACE regress_tblspace_renamed SET TABLESPACE pg_default;
 
 -- Should show notice that nothing was done
 ALTER TABLE ALL IN TABLESPACE regress_tblspace_renamed SET TABLESPACE pg_default;
+ALTER MATERIALIZED VIEW ALL IN TABLESPACE regress_tblspace_renamed SET TABLESPACE pg_default;
 
 -- Should succeed
 DROP TABLESPACE regress_tblspace_renamed;